Install Sheet

6
Two Stage Models RS4220C, RS5220C and RS6220C
TERMINAL
EQUIPMENT TO
CONNECT
DESCRIPTION
L
24V AC
Compressor Fault
Output
Connect to fault signal for input from
a compressor.
Y2
Second stage
cooling
connection.
Energizes on a call for second stage
cooling (aux.).
W2
Second stage
heat connection
Energizes on a call for second stage
heating (aux.).
E
Emergency Heat
Connection
Energizes on a call for emergency heat.
If emergency heat is the same as the second
stage then jumper E to W2.
Three Stage Models RS4320C and RS6320C
TERMINAL
EQUIPMENT TO
CONNECT
DESCRIPTION
E Third stage heat Energizes on a call for 3rd stage heat